Supermicro P4SGA+ User Manual download pdf (Page 38)

2-14

SUPER P4SGA/P4SGL/P4SGR/P4SGE User's Manual

2-7 Jumper Settings

Explanation of

Jumpers

To modify the operation of the

motherboard, jumpers can be used

to choose between optional set-

tings. Jumpers create shorts be-

tween two pins to change the

function of the connector. Pin 1 is

identified with a square solder pad

on the printed circuit board. See

the motherboard layout pages for

jumper locations.

Note: On a two-pin jumper,

"Closed" means the jumper is on

both pins and "Open" means the

jumper is either on only one pin or

completely removed.

Connector

Pins

Jumper

Cap

Setting

Pin 1-2 short

3 2 1

CMOS Clear

JBT1 is used to clear CMOS. Instead

of pins, this jumper consists of con-

tact pads to prevent accidentally

clearing the contents of CMOS.

To clear CMOS,

1) First unplug the power cord(s) .

2) With the power disconnected, short

the CMOS pads with a metal object

such as a small screwdriver.

3) Remove the screwdriver (or short-

ing device).

4) Reconnect the power cord(s) and

power on the system.

Note: Do not use the PW_ON con-

nector to clear CMOS.

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Supermicro P4SGA+ User Manual Page 38

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